Keysight A Series User Manual page 313

IQ Analyzer (IQA) – Option 351 (CPU2 Only)
I/Q Analyzer (IQA) Mode Settings
— Press Scale/Amptd.
Manually set Log or Linear Scale Type (Spectrum and RF Envelope Only)
Manually set Scale, Unit, Acquisition, and Reference Position.
—
—
—
—
— More, then
Keysight N9927-90020 User's Guide
Then select from the following:
— More
——Scale Type [current setting]
—Only)
——Log
reference line represents the specified absolute
acquisition in the current Unit selection. Y-axis
graticules show dB below or above the reference line
(default: 10 dB, minimum: 0.01 dB, maximum: 20 dB).
——Lin
specified absolute acquisition in the current Unit
selection.
Autoscale Automatically adjusts the Y-axis to comfortably fit the Minimum
and Maximum amplitude of the trace on the screen. Also, optimizes the
FieldFox's signal level at the mixer and adjusts the reference level to with
the autoscale settings.
Scale/Div Manually adjust the scale per division to view specific areas of
the current trace. Enter a value using the numeric keypad, the
or the rotary knob. Then press Enter.
Ref Level Manually set the value of the reference line. Enter a negative
value by pressing Run/Hold (+/-) either before or after typing a value. Use
acquisition in combination with the RF attenuator and the Preamp so that
the signal at the acquisition is at the optimum level for the FieldFox
(Spectrum and RF Envelope Only). This can also change the RF Attenuation
setting (default: 0). See
Ref Pos Manually set the position of the reference line. Values must be
between 0 (TOP line) and 10 (BOTTOM line). Default position is zero (top)
(default: 0, minimum: 0, maximum: 10).
— Unit Sets the display units.
(Spectrum and RF Envelope)
Logarithmic scale (default setting). The Y-axis
Linear scale. The Y-axis reference line represents the
——Y-axis graticules show percent of acquisition (%)
below or above the reference line (Spectrum).
——Y-axis graticules show voltage (V) – (RF
Envelope).
"Attenuation Control" on page
arrows,
314.
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